<!DOCTYPE html>
<html lang="zh-CN">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      div {
        width: 200px;
        height: 200px;
        background-color: pink;
        /* 设置元素的边框为1像素宽的实线，颜色为黑色  */
        border: 1px solid #000;
        /* 设置元素的盒模型为border-box，即边框包含在元素的宽度和高度之内 */
        box-sizing: border-box;
        margin: 20px;
        padding: 20px;
      }
    </style>
  </head>
  <body>
    <div>标签1</div>
    <div>标签2</div>
  </body>
</html>
